<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>注册（自适应终端）</title>
    <style>
        .title {
            height: 85px;
            line-height: 85px;
            text-align: center;
            font-size: 28px;
        }

        .row {
            height: 70px;
            box-sizing: border-box;
            margin-left: 32px;
            margin-right: 32px;
            padding-top: 40px;
            border-bottom: 1px solid #888;
        }

        .input {
            width: 100%;
            height: 20px;
            border: none;
            font-size: 16px;
            line-height: 20px;
        }

        .btn,
        .btn2 {
            height: 50px;
            margin-left: 32px;
            margin-right: 32px;
            margin-top: 68px;
            background-color: red;
            line-height: 50px;
            color: white;
            text-align: center;
            border-radius: 8px;
        }

        .btn2 {
            background-color: blue;
            color: white;
        }

        .btn a,
        .btn2 a {
            text-decoration: none;
            color: white;
        }
    </style>
</head>

<body>
    <div class="title">
        <h3>用户注册</h3>
    </div>
    <div class="row">
        <input type="text" name="username" id="username" class="input" placeholder="注册账号">
    </div>
    <div class="row">
        <input type="password" name="password" id="password" class="input" placeholder="注册密码">
    </div>
    <div class="row">
        <input type="password" name="password" id="password" class="input" placeholder="重复密码">
    </div>
    <div class="btn">注册</div>
    <div class="btn2"><a href="#">登录</a></div>
</body>

</html>